Device and method for manufacturing work

A work manufacturing device comprising:

• an upper die unit;
• and
• a lower die unit disposed opposite to the upper die unit, wherein one of the upper die unit and the lower die unit includes a main punch for punching out a work from a material to be processed, and the other die unit includes:
• an ejector disposed so as to be movable in a vertical direction and to discharge the work punched out by the main punch and retained on the other die unit side;
• a slider disposed so as to be movable in a direction crossing with a vertical direction;
• and a biasing portion connected to the slider and biasing the slider in a predetermined sliding direction (S), and
• a cam structure is disposed between the slider and the ejector, which converts a movement of the ejector in a direction opposite to a work ejecting direction (E) to a movement of the slider in a direction opposite to the predetermined sliding direction (S) when the upper die unit and the lower die unit are closed, and which converts a movement of the slider in the predetermined sliding direction (S) to a movement of the ejector in the work ejecting direction (E) when the upper die unit and the lower die unit are opened by a predetermined amount from the closed state,
• the device further comprising a position retaining portion which retains the slider moved in a direction opposite to the predetermined sliding direction (S), in the position for a certain period of time.